plzz help me in this qn …I don’t know why this is giving wa …
with my solution
https://www.codechef.com/viewsolution/66158947
plzz help me in this qn …I don’t know why this is giving wa …
with my solution
https://www.codechef.com/viewsolution/66158947
@alwayswin - would suggest you to try once with the doubt solvers given the difficulty rating of this problem - CodeChef: Practical coding for everyone
did you read the editorial already? TWONUMBERS - Editorial
I don’t know all errors in your code but I found 1 looking over it:
int a =n/2;
int b =n/2 +1;
cout<<(a * b * 1ll) -1;
a <= 10⁹
b <= 10⁹
a * b <= 10¹⁸
The associativity of *
is left-to-right, meaning a * b * 1ll == (a * b) * 1ll
you multiplying 2 ints will cause the result to be an int, which obviously can cause an Integer Overflow. Only after you caused that Integer Overflow will you multiply with a long.
Thanx bro i got my mistake
I am unable to find any doubt solver using your link